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JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyApplication

JEE Main 3 August 2021, Shift 2, Chemistry Q38

Question 38 of 90 in this shift, Chemistry question 8 of 30, Section A.

Which one of the following set will give coloured aqueous solution?

(1) $\mathrm{Cu^{2+}, V^{3+}, Sc^{3+}}$
(2) $\mathrm{Sc^{3+}, Ti^{4+}, Mn^{3+}}$
(3) $\mathrm{V^{3+}, Mn^{3+}, Cu^{2+}}$ Official answer
(4) $\mathrm{V^{3+}, Cu^{2+}, Ti^{4+}}$

Official answer

Option 3

NTA final key.

Chapter: The d- and f-Block Elements
Topic: d-Block Elements
Idea tested: Color and Catalysis

Same idea in other shifts

Asked 2× in all

8 Apr 2026, Shift 2 · Q60Given below are two statements : Statement I : The number of pairs among $[\mathrm{Ti^{4+}, V^{2+}}]$ , $[\mathrm{V^{2+}, Mn^{2+}}]$ ,…MediumTwo statements

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.